Icons are totally not useful. Be proud of your logo and colours.
The only good icon with a transparent background disappeared for a white one and these ugly colored ones. 
Why a white background? To copy on Google even more? Opera used to be a precursor. Now copying icons and menu from Chrome.
More important, since a few versions the media picker replaced the normal files chooser and this is ugly. I see Google requires to use it, so Opera follows again?
And scrolling in text area are not "easy", sometimes it scrolls the whole page or works we don't really know why.
Like here, when I type, I can't see the beginning of my text. Opera only scrolls the page.
But?